Property Registration Decree (PD 1529)
Section 12. Owner's Index; reports. There shall be prepared in every Registry an index system which shall contain the names of all registered owners alphabetically arranged. For this purpose, an index card which shall be prepared in the name of each registered owner which shall contain a list of all lands registered in his name.
The Register of Deeds shall submit to the Land Registration Commission within ten days after the month to which they pertain his monthly reports on collections and accomplishments. He shall also submit to the Commission at the end of December of each year, an annual inventory of all titles and instruments in his Registry.